Sony MV7101DS Operating Instructions - Page 39
About MP3 files, ISO 9660 Format
UPC - 027242627581
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About MP3 files MP3 (MPEG 1 Audio Layer-3) is a standard technology and format for compressing a sound sequence. The file is compressed to about 1/10 of its original size. Sounds outside the range of human hearing are compressed while the sounds we can hear are not compressed. Recommended MP3 file format Sampling frequency (Hz) 32k, 44.1k, 48k Bitrate (bps) 32k to 256k Notes on discs You can play MP3 files recorded on CD-ROMs, CD-Rs, and CD-RWs. The disc must be in the ISO 9660* level 1 or level 2 format, or Joliet or Romeo in the expansion format. * ISO 9660 Format The most common international standard for the logical format of files and folders on a CD-ROM. There are several specification levels. In Level 1, file names must be in the 8.3 format (no more than 8 characters in the name, no more than 3 characters in the extension ".MP3") and in capital letters. Folder names can be no longer than 8 characters. There can be no more than 8 nested folder levels. Level 2 specifications allow file names up to 31 characters long. Each folder can have up to 8 trees. For Joliet or Romeo in the expansion format, make sure of the contents of the writing software, etc. Notes • With formats other than ISO 9660 level 1 and level 2, folder names or file names may not be displayed correctly. • When naming, be sure to add the file extension ".MP3" to the file name. • If you put the extension ".MP3" to a file other than MP3, the player cannot recognize the file properly and will generate random noise that could damage your speakers. • The following discs take a longer time to start playback. - a disc recorded with complicated tree structure. - a disc to which data can be added. • If you play a high-bit rate MP3 file such as 320 kbps, sound may be intermittent. The playback order of the MP3 files The playback order of the folders and files is as follows: 1 1 2 2 Folder (album) MP3 file (track) 3 3 4 5 4 5 6 6 7 7 8 8 9 Tree 1 (root) Tree 2 Tree 3 Tree 4 Tree 5 Tip To specify a desired playback order, before the folder or file name, input the order by number (e.g., "01," "02"), then record contents onto a disc (The order differs depending on the writing software). 39